A detection tool for a pull rod bolt

Abstract

This utility model relates to the technical field of testing devices for railing bolt production. Specifically, it discloses a testing fixture for tie rod bolts, comprising: a worktable; a first limiting component; a hexagonal limiting groove formed within the first limiting component; a cover plate slidably disposed on the worktable for pressing against the nut of the tie rod bolt; a first through slot formed on the cover plate for the thread of the tie rod bolt to pass through; a lifting platform slidably mounted on the worktable in a vertical direction; a second limiting component parallel to the cover plate, slidably disposed on the lifting platform, located below the nut, for limiting the axial movement of the nut; a second through slot formed on the second limiting component for the thread of the tie rod bolt to pass through; and a torque wrench for the operator to hold and tighten the nut. The entire fixture eliminates the need for threaded clamping, effectively improving the clamping efficiency of the tie rod on the fixture and enhancing the testing efficiency of the tie rod bolts.

Description

Technical Field

[0001] This utility model relates to the technical field of railing bolt production and testing equipment, and in particular to a testing fixture for tie rod bolts. Background Technology

[0002] Generally, tie rod bolts have the same structure as traditional bolts. Such tie rod bolts are often used in the heat treatment process in optical glass furnaces. After passing through the connecting hole of the heat-treated workpiece, the tie rod bolt is locked with a nut.

[0003] After the tie rod bolts are manufactured, the bolt torque needs to be tested to check whether the bolt torque meets the design requirements.

[0004] For example, Chinese patent application number CN202420346065.0 discloses a bolt torque detection device comprising: a platform having a base plate, a lifting platform and a drive unit for driving the lifting platform to move longitudinally mounted on the base plate; a motor mounted on the lifting platform with its output end facing downwards; two sets of clamps, one set mounted on the top of the base plate and the other below the lifting platform; and a torque detector, the two connecting ends of which are respectively connected to the output shaft of the motor and the clamps mounted below the lifting platform.

[0005] The fixture includes a base plate 2. The base plates 2 of the two sets of fixtures are fixedly connected to the top of the base plate 1 and the bottom of the torque detector, respectively. A pair of ear plates are formed on the top of the base plate 2. A clamping plate facing each other is provided between the pair of ear plates. The bolt can be clamped by driving the two clamping plates to move towards each other. The screw 2 of the fixture is rotated to bring the two clamping plates closer to each other and clamp one end of the bolt.

[0006] In the above technical solution, the second screw needs to be rotated to move the two clamping plates closer together to clamp the bolt. In each bolt assembly and disassembly, the second screw needs to be manually turned. The entire bolt clamping process is cumbersome and reduces the efficiency of bolt torque detection. Utility Model Content

[0007] In view of the above problems, this utility model provides a testing fixture for tie rod bolts, the purpose of which is to improve the clamping efficiency in the testing of tie rod bolts.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] A testing fixture for tie rod bolts is provided, comprising: a worktable; a first limiting component disposed within the worktable; a hexagonal limiting groove formed within the first limiting component for placing the nut of the tie rod bolt; a cover plate slidably disposed on the worktable for pressing against the nut of the tie rod bolt; a first through slot formed on the cover plate for the thread of the tie rod bolt to pass through; a lifting platform slidably mounted on the worktable in a vertical direction; a second limiting component parallel to the cover plate, slidably disposed on the lifting platform, located below the nut, for restricting axial movement of the nut; a second through slot formed on the second limiting component for the thread of the tie rod bolt to pass through; and a torque wrench for the operator to hold and use to tighten the nut.

[0010] Furthermore, the tooling also includes: a first T-shaped slider disposed on the cover plate; a first T-shaped groove formed on the worktable, wherein the first T-shaped slider is slidably disposed in the first T-shaped groove; and a first positioning pin capable of passing through the cover plate and being inserted into the worktable.

[0011] Furthermore, the tooling also includes: a second T-shaped slider, which is mounted on the lifting platform; a second T-shaped groove, which is formed on the second limiting component, and the second T-shaped slider is slidably mounted in the second T-shaped groove; and a second positioning pin, which can pass through the second limiting component and be inserted into the lifting platform.

[0012] Furthermore, the tooling also includes: a lifting rod, installed perpendicular to the lifting platform, one end of which is slidably placed inside the workbench, and the other end of which is fixedly connected to the lifting platform; and several pads placed between the lifting platform and the workbench.

[0013] Furthermore, the lifting platform is U-shaped.

[0014] Furthermore, four lifting rods are installed on the lifting platform.

[0015] Furthermore, a third through slot is provided on the pad for the lifting rod to pass through.

[0016] The beneficial effects of this utility model are as follows: In this utility model, the circumferential rotation of the tie rod bolt is restricted by the first limiting component, and the axial movement of the nut is restricted by the second limiting component; the clamping of the threaded connection is eliminated in the entire tooling, and the operator can complete the picking and putting of the tie rod bolt by pushing and pulling the second limiting component and the cover plate, which can effectively improve the clamping efficiency of the tie rod on the tooling and improve the inspection efficiency of the tie rod bolt. Attached Figure Description

[0017] Figure 1 The front view of the tie rod bolt clamped in the tooling provided in the embodiment of this application.

[0018] Figure 2This is a top view of the overall structure of the tooling provided in the embodiments of this application.

[0019] Figure 3 This is a top view of the pad provided in an embodiment of this application.

[0020] The components are as follows: 1. Workbench; 11. First limiting component; 2. Cover plate; 21. First through groove; 3. Lifting platform; 4. Second limiting component; 41. Second through groove; 51. First T-shaped slider; 52. First T-shaped slide; 53. First positioning pin; 54. Second T-shaped slider; 55. Second positioning pin; 6. Lifting rod; 61. Pad; 62. Third through groove; 71. Screw; 72. Nut; 73. Nut. Detailed Implementation

[0021] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0022] Reference Figure 1 and Figure 2 As shown in the embodiment of this application, a testing fixture for tie rod bolts is disclosed, comprising: a workbench 1; a first limiting component 11 disposed within the workbench 1; a limiting groove, hexagonal in shape, formed within the first limiting component 11, for placing the nut 72 of the tie rod bolt; a cover plate 2 slidably disposed on the workbench 1 for pressing against the nut 72 of the tie rod bolt; a first through groove 21 formed on the cover plate 2 for the thread 71 of the tie rod bolt to pass through; a lifting platform 3 slidably mounted on the workbench 1 in the vertical direction; a second limiting component 4, parallel to the cover plate 2, slidably disposed on the lifting platform 3, located below the nut 73, for restricting the axial movement of the nut 73; a second through groove 41 formed on the second limiting component 4 for the thread 71 of the tie rod bolt to pass through; and a torque wrench for the operator to hold and use to tighten the nut 73.

[0023] In practical use, the workbench 1 is set horizontally. The operator first places the tie rod bolt to be tested upside down in the first limiting component 11, with the nut 72 of the tie rod bolt in the limiting groove. The hexagonal inner wall of the limiting groove restricts the circumferential rotation of the tie rod bolt. Then, the cover plate 2 is pulled, and the screw 71 enters the first through groove 21. The cover plate 2 presses the nut 72 tightly in the first limiting component 11. Then, the second limiting component 4 is pulled, and the screw 71 enters the second through groove 41. The second limiting component 4 restricts the axial movement of the nut 73. Finally, the operator uses a torque wrench to tighten the nut 73, which allows the torque of the nut 73 on the screw 71 to be tested. The operator can then observe whether cracking or other issues occur and check whether the tie rod bolt meets production requirements.

[0024] In this invention, the circumferential rotation of the tie rod bolt is restricted by the first limiting component 11, and the axial movement of the nut 73 is restricted by the second limiting component 4. The entire fixture eliminates the need for threaded connection clamping. The operator can pick up and put down the tie rod bolt by pushing and pulling the second limiting component 4 and the cover plate 2, which can effectively improve the clamping efficiency of the tie rod on the fixture and improve the inspection efficiency of the tie rod bolt.

[0025] It is worth mentioning that the nut 72 of the tie rod bolt in this embodiment is hexagonal.

[0026] Specifically, the tooling also includes: a first T-shaped slider 51, which is disposed on the cover plate 2; a first T-shaped groove 52, which is opened on the worktable 1, and the first T-shaped slider 51 is slidably disposed in the first T-shaped groove 52; and a first positioning pin 53, which can pass through the cover plate 2 and be inserted into the worktable 1.

[0027] By pushing and pulling the cover plate 2, the staff can drive the first T-shaped slider 51 to slide within the first T-shaped groove 52, which in turn drives the cover plate 2 to slide. After the cover plate 2 is slid to the designated position, the first positioning pin 53 is inserted through the cover plate 2 into the workbench 1 to complete the positioning of the cover plate 2.

[0028] Specifically, the tooling also includes: a second T-shaped slider 54, which is mounted on the lifting platform 3; a second T-shaped groove, which is opened on the second limiting component 4, and the second T-shaped slider 54 is slidably mounted in the second T-shaped groove; and a second positioning pin 55, which can pass through the second limiting component 4 and be inserted into the lifting platform 3.

[0029] By pushing and pulling the second limiting component 4, the staff can drive the second T-shaped slider 54 to slide within the second T-shaped groove, which in turn drives the second limiting component 4 to slide. After the second limiting component 4 is slid to the designated position, the second positioning pin 55 is inserted through the second limiting component 4 into the lifting platform 3 to complete the positioning of the second limiting component 4.

[0030] Reference Figure 3 As shown, the fixture also includes: a lifting rod 6, which is installed perpendicular to the lifting platform 3. One end of the lifting rod 6 is slidably placed inside the workbench 1, and the other end of the lifting rod 6 is fixedly connected to the lifting platform 3; several pads 61 are placed between the lifting platform 3 and the workbench 1; the lifting platform 3 is U-shaped; four lifting rods 6 are provided on the lifting platform 3; and a third through groove 62 is provided on the pads 61 for the lifting rods 6 to pass through.

[0031] In practical use, by placing different numbers of pads 61 between the lifting platform 3 and the worktable 1, the lifting platform 3 can be supported at different horizontal heights, thereby placing the second limiting component 4 at different horizontal heights to meet the limiting requirements of nuts 73 at different installation heights.

[0032] It's worth mentioning that any torque wrench available on the market will suffice.

[0033] Those skilled in the art will understand that although preferred embodiments of the present invention have been described, those skilled in the art, once they learn the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention. Clearly, those skilled in the art can make various alterations and modifications to the present invention without departing from its spirit and scope. Thus, if these modifications and modifications of the present invention fall within the scope of the machine equivalents of the claims of the present invention, the present invention also intends to include these modifications and modifications.

Claims

1. A testing fixture for tie rod bolts, characterized in that, include: Workbench (1); The first limiting component (11) is disposed inside the worktable (1); The limiting groove is hexagonal in shape and is opened in the first limiting component (11) for the nut (72) of the tie rod bolt to be placed; Cover plate (2), which is slidably mounted on workbench (1), is used to press against the nut (72) of the tie rod bolt; The first through slot (21) is opened on the cover plate (2) for the threaded rod (71) of the tie rod bolt to pass through; The lifting platform (3) is slidably mounted on the workbench (1) in the vertical direction; The second limiting component (4) is parallel to the cover plate (2) and is slidably disposed on the lifting platform (3) and located below the nut (73) to limit the axial movement of the nut (73); The second through groove (41) is opened on the second limiting component (4) for the threaded rod (71) of the tie rod bolt to pass through; A torque wrench for workers to hold and use to tighten nuts (73).

2. The inspection fixture for tie rod bolts according to claim 1, characterized in that, Also includes: The first T-shaped slider (51) is mounted on the cover plate (2); The first T-shaped slide groove (52) is provided on the workbench (1), and the first T-shaped slider (51) is slidably disposed in the first T-shaped slide groove (52); The first positioning pin (53) can pass through the cover plate (2) and be inserted into the worktable (1).

3. The inspection fixture for tie rod bolts according to claim 1, characterized in that, Also includes: The second T-shaped slider (54) is installed on the lifting platform (3); The second T-shaped slide groove is opened on the second limiting component (4), and the second T-shaped slider (54) is slidably disposed in the second T-shaped slide groove; The second positioning pin (55) can pass through the second limiting component (4) and be inserted into the lifting platform (3).

4. The inspection fixture for tie rod bolts according to claim 1, characterized in that, Also includes: The lifting rod (6) is installed perpendicular to the lifting platform (3). One end of the lifting rod (6) is slidably placed inside the workbench (1), and the other end of the lifting rod (6) is fixedly connected to the lifting platform (3). Several pads (61) are placed between the lifting platform (3) and the workbench (1).

5. The inspection fixture for tie rod bolts according to claim 4, characterized in that, The lifting platform (3) is U-shaped.

6. The inspection fixture for tie rod bolts according to claim 4, characterized in that, Four lifting rods (6) are installed on the lifting platform (3).

7. The inspection fixture for tie rod bolts according to claim 4, characterized in that, A third through slot (62) is provided on the pad (61) for the lifting rod (6) to pass through.

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